Pearl River Estuary, China

Main Contributors:

Other Contributors:

Summary

Pearl River estuary receives waste water and sewage from population centers and highly industrialized cities. The environment of the estuary has deteriorated dramatically. Persistent hypoxia in parts of the estuary is caused by organic pollution and nitrification.

Montevideo Bay, Uruguay

Main Contributors:

Other Contributors:

Summary

Hypoxia in the Montevideo Bay was first reported in the 1960s. It caused mass mortality of benthos (annual recolonization) and reduced fisheries. The hypoxic situation improved due to improved nutrient management in the 1990s. Fisheries are now recovering.